101289 has 8 divisors (see below), whose sum is σ = 142240. Its totient is φ = 63936.

The previous prime is 101287. The next prime is 101293. The reversal of 101289 is 982101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101289 - 2¹ = 101287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 832 + ... + 945.

It is an arithmetic number, because the mean of its divisors is an integer number (17780).

2¹⁰¹²⁸⁹ is an apocalyptic number.

101289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

101289 is a deficient number, since it is larger than the sum of its proper divisors (40951).

101289 is a wasteful number, since it uses less digits than its factorization.

101289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 101289 is about 318.2593282215. The cubic root of 101289 is about 46.6144711208.

The spelling of 101289 in words is "one hundred one thousand, two hundred eighty-nine".